From: Willem Toorop <willem@nlnetlabs.nl>
Date: Mon, 27 Dec 2021 13:38:54 +0000 (+0100)
Subject: Comment explaining how empty long strings are represented in rdfs
X-Git-Tag: 1.8.2-rc.1~31
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8803df157f788cec99fd403ccbffff713aa169d3;p=thirdparty%2Fldns.git

Comment explaining how empty long strings are represented in rdfs

In response to issue #150
---

diff --git a/str2host.c b/str2host.c
index ea2fe73a..b33101b0 100644
--- a/str2host.c
+++ b/str2host.c
@@ -1550,6 +1550,9 @@ ldns_str2rdf_long_str(ldns_rdf **rd, const char *str)
 		return LDNS_STATUS_SYNTAX_BAD_ESCAPE;
 	}
 	if (!(length = (size_t)(dp - data))) {
+		/* An empty string is a data buffer of 0 bytes.  The rdf for 
+		 * this long string has to have length 0 and point to NULL.
+		 */
 		LDNS_FREE(data);
 		data = NULL;
 	} else {